execute("ALTER table qimall_addons_course add sort int(11) not null default 0 comment '排序值,数值越大排的越前';"); }catch (\Exception $e){ } } /** * {@inheritdoc} */ public function safeDown() { echo "M230704014912AlterQimallAddonsCourse cannot be reverted.\n"; return false; } /* // Use up()/down() to run migration code without a transaction. public function up() { } public function down() { echo "M230704014912AlterQimallAddonsCourse cannot be reverted.\n"; return false; } */ }